Question
In: Mechanical Engineering
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04...
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and transfers energy to the air at a constant rate of 1 kW for 100s. The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a constant, average specific heat)
Solutions
samet mamat answered 2 years agoRelated Solutions
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04...
0.1 kg of air (ideal gas) is contained in a closed, rigid tank
of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and
transfers energy to the air at a constant rate of 1 kW for 100s.
The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a
constant, average specific heat)
A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at...
A closed, rigid tank fitted with a paddle wheel contains 2.2 kg
of air, initially at 200oC, 1 bar. During an interval of 20
minutes, the paddle wheel transfers energy to the air at a rate of
1 kW. During this time interval, the air also receives energy by
heat transfer at a rate of 0.5 kW. These are the only energy
transfers. Assume the ideal gas model for the air, and no overall
changes in kinetic or potential energy....
Steam at 275ºC and 15.0 bar is contained in a rigid tank with the volume of...
Steam at 275ºC and 15.0 bar is contained in a rigid tank with
the volume of 10.0 m3 . In a constantvolume cooling process, the
pressure inside the tank drops to 1.8 bar and some of the steam
condenses. Calculate 1) the temperature of the tank contents after
the process, 2) the amount of steam condensed during the process
(in kg), and 3) the amount of heat removed from the tank during the
process.
Steam at 275ºC and 15.0 bar is contained in a rigid tank with the volume of...
Steam at 275ºC and 15.0 bar is contained in a rigid tank with
the volume of 10.0 m^3 . In a constant volume cooling process, the
pressure inside the tank drops to 1.8 bar and some of the steam
condenses. Calculate 1) the temperature of the tank contents after
the process, 2) the amount of steam condensed during the process
(in kg), and 3) the amount of heat removed from the tank during the
process.
Water is contained in a closed, rigid, 0.2 m3 tank at an initial pressure of 5...
Water is contained in a closed, rigid, 0.2 m3 tank at
an initial pressure of 5 bar and a quality of 50%. Heat transfer
occurs until the tank contains only saturated vapor. Determine
a)the final mass of vapor in the tank, in kg,b)
the final pressure, in bar.
A rigid tank with a volume of 20 litres initially contains water at 0.1 degree of...
A rigid tank with a volume of 20 litres initially contains water
at 0.1 degree of dryness and a pressure of 175 KPA. A steam
disposal Valve is located at the top of the tank. Adding heat and
steam by throwing the final case degree of dryness 0.4 and pressure
150 kPa is desired to be made. How much mass is ejected and what is
the entropy produced. Heat source temperature 1000 K.
A rigid and closed steel tank with a volume of 86 dm 3 contains a mixture...
A rigid and closed steel tank with a volume of 86 dm
3 contains a mixture of saturated vapor and
liquid at a quality and pressure of 0.9 and 20 bar respectively.
Heat is removed from the system until it reaches 147 ° C.
What is the volume of the saturated liquid phase at the end
state?
A gas is leaking from a rigid tank into the air. Which of the following represents...
A gas is leaking from a rigid tank into the air. Which of the
following represents the BEST energy balance?
a
d(nU) = Hdn
b
Δ(nU) = HΔn
c
ΔU = Q + W
d
ΔH = Q + W
Which of the following is the first step to solving a
thermodynamics problem?
a
Identify your system as steady or unsteady-state.
b
Write the mass and energy balances.
c
Identify system boundaries and select open or closed.
d
Identify the...
If a contained ideal gas decreases the volume by a factor of twoand then triples...
If a contained ideal gas decreases the volume by a factor of two
and then triples the temperature, what happens to the pressure?
A closed, rigid, 0.40 m3 tank is filled with 15 kg of water. The initial pressure...
A closed, rigid, 0.40 m3 tank is filled with 15 kg of
water. The initial pressure is p1 = 20 bar. The
water is cooled until the pressure is p2= 4
bar.
Determine the initial quality, x1, and the heat
transfer, in kJ.
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